The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1987
Filed:
Feb. 14, 1985
Yves C Faroudja, Los Altos Hills, CA (US);
Jack J Campbell, San Francisco, CA (US);
Faroudja Laboratories, Inc., Sunnyvale, CA (US);
Abstract
Apparatus and method for chroma noise reduction in a quadrature modulated color television signal path carries out the steps of detecting a chroma signal noise component in the path; detecting predetermined signal characteristics in the path; generating a control signal as a function of the detected signal characteristics wherein the signal characteristics include at least one of: luminance component amplitude, luminance component level transition, and a combination of simultaneously occurring conditions in luminance and chrominance signal components in the path; applying the control signal to separate chroma signal component noise from the predetermined signal characteristics; and subtracting the separated chroma noise in time coincidence with the color television signal in the path, whereby chroma noise is reduced from the signal path without bandwidth reduction.